CVE-2026-46331

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial COW leading to page cache corruption tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd. Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved: pstore/ram: fix buffer overflow in persistent_ram_save_old() persistent_ram_save_old() can be called multiple times for the same persistent_ram_zone (e.g., via ramoops_pstore_read -> ramoops_get_next_prz for PSTORE_TYPE_DMESG records). Currently, the function only allocates prz->old_log when it is NULL, but it unconditionally updates prz->old_log_size to the current buffer size and then performs memcpy_fromio() using this new size. If the buffer size has grown since the first allocation (which can happen across different kernel boot cycles), this leads to: 1. A heap buffer overflow (OOB write) in the memcpy_fromio() calls 2. A subsequent OOB read when ramoops_pstore_read() accesses the buffer using the incorrect (larger) old_log_size The KASAN splat would look similar to: BUG: KASAN: slab-out-of-bounds in ramoops_pstore_read+0x... Read of size N at addr ... by task ... The conditions are likely extremely hard to hit: 0. Crash with a ramoops write of less-than-record-max-size bytes. 1. Reboot: ramoops registers, pstore_get_records(0) reads old crash, allocates old_log with size X 2. Crash handler registered, timer started (if pstore_update_ms >= 0) 3. Oops happens (non-fatal, system continues) 4. pstore_dump() writes oops via ramoops_pstore_write() size Y (>X) 5. pstore_new_entry = 1, pstore_timer_kick() called 6. System continues running (not a panic oops) 7. Timer fires after pstore_update_ms milliseconds 8. pstore_timefunc() → schedule_work() → pstore_dowork() → pstore_get_records(1) 9. ramoops_get_next_prz() → persistent_ram_save_old() 10. buffer_size() returns Y, but old_log is X bytes 11. Y > X: memcpy_fromio() overflows heap Requirements: - a prior crash record exists that did not fill the record size (almost impossible since the crash handler writes as much as it can possibly fit into the record, capped by max record size and the kmsg buffer almost always exceeds the max record size) - pstore_update_ms >= 0 (disabled by default) - Non-fatal oops (system survives) Free and reallocate the buffer when the new size differs from the previously allocated size. This ensures old_log always has sufficient space for the data being copied. The Linux kernel CVE team has assigned CVE-2026-46253 to this issue.(CVE-2026-46253)

In the Linux kernel, the following vulnerability has been resolved:

net/sched: fix pedit partial COW leading to page cache corruption

tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd.

Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.(CVE-2026-46331)

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

nbd: fix uaf in nbd_genl_connect() error path

There is a use-after-free issue in nbd:

block nbd6: Receive control failed (result -104) block nbd6: shutting down sockets

BUG: KASAN: slab-use-after-free in recv_work+0x694/0xa80 drivers/block/nbd.c:1022 Write of size 4 at addr ffff8880295de478 by task kworker/u33:0/67

CPU: 2 UID: 0 PID: 67 Comm: kworker/u33:0 Not tainted 6.15.0-rc5-syzkaller-00123-g2c89c1b655c0 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: nbd6-recv recv_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_dec include/linux/atomic/atomic-instrumented.h:592 [inline] recv_work+0x694/0xa80 drivers/block/nbd.c:1022 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK>

nbd_genl_connect() does not properly stop the device on certain error paths after nbd_start_device() has been called. This causes the error path to put nbd->config while recv_work continue to use the config after putting it, leading to use-after-free in recv_work.

This patch moves nbd_start_device() after the backend file creation.(CVE-2025-38443)

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Use scratch field in MMIO fragment to hold small write values

When exiting to userspace to service an emulated MMIO write, copy the to-be-written value to a scratch field in the MMIO fragment if the size of the data payload is 8 bytes or less, i.e. can fit in a single chunk, instead of pointing the fragment directly at the source value.

This fixes a class of use-after-free bugs that occur when the emulator initiates a write using an on-stack, local variable as the source, the write splits a page boundary, and both pages are MMIO pages. Because KVM's ABI only allows for physically contiguous MMIO requests, accesses that split MMIO pages are separated into two fragments, and are sent to userspace one at a time. When KVM attempts to complete userspace MMIO in response to KVM_RUN after the first fragment, KVM will detect the second fragment and generate a second userspace exit, and reference the on-stack variable.

The issue is most visible if the second KVM_RUN is performed by a separate task, in which case the stack of the initiating task can show up as truly freed data.

================================================================== BUG: KASAN: use-after-free in complete_emulated_mmio+0x305/0x420 Read of size 1 at addr ffff888009c378d1 by task syz-executor417/984

CPU: 1 PID: 984 Comm: syz-executor417 Not tainted 5.10.0-182.0.0.95.h2627.eulerosv2r13.x86_64 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack+0xbe/0xfd print_address_description.constprop.0+0x19/0x170 __kasan_report.cold+0x6c/0x84 kasan_report+0x3a/0x50 check_memory_region+0xfd/0x1f0 memcpy+0x20/0x60 complete_emulated_mmio+0x305/0x420 kvm_arch_vcpu_ioctl_run+0x63f/0x6d0 kvm_vcpu_ioctl+0x413/0xb20 __se_sys_ioctl+0x111/0x160 do_syscall_64+0x30/0x40 …

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

fbdev: fix potential buffer overflow in do_register_framebuffer()

The current implementation may lead to buffer overflow when:

1. Unregistration creates NULL gaps in registered_fb[]
2. All array slots become occupied despite num_registered_fb < FB_MAX
3. The registration loop exceeds array bounds

Add boundary check to prevent registered_fb[FB_MAX] access.(CVE-2025-38702)

In the Linux kernel, the following vulnerability has been resolved:

hfs: validate record offset in hfsplus_bmap_alloc

hfsplus_bmap_alloc can trigger a crash if a record offset or length is larger than node_size

[ 15.264282] BUG: KASAN: slab-out-of-bounds in hfsplus_bmap_alloc+0x887/0x8b0 [ 15.265192] Read of size 8 at addr ffff8881085ca188 by task test/183 [ 15.265949] [ 15.266163] CPU: 0 UID: 0 PID: 183 Comm: test Not tainted 6.17.0-rc2-gc17b750b3ad9 #14 PREEMPT(voluntary) [ 15.266165] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.266167] Call Trace: [ 15.266168] <TASK> [ 15.266169] dump_stack_lvl+0x53/0x70 [ 15.266173] print_report+0xd0/0x660 [ 15.266181] kasan_report+0xce/0x100 [ 15.266185] hfsplus_bmap_alloc+0x887/0x8b0 [ 15.266208] hfs_btree_inc_height.isra.0+0xd5/0x7c0 [ 15.266217] hfsplus_brec_insert+0x870/0xb00 [ 15.266222] __hfsplus_ext_write_extent+0x428/0x570 [ 15.266225] __hfsplus_ext_cache_extent+0x5e/0x910 [ 15.266227] hfsplus_ext_read_extent+0x1b2/0x200 [ 15.266233] hfsplus_file_extend+0x5a7/0x1000 [ 15.266237] hfsplus_get_block+0x12b/0x8c0 [ 15.266238] __block_write_begin_int+0x36b/0x12c0 [ 15.266251] block_write_begin+0x77/0x110 [ 15.266252] cont_write_begin+0x428/0x720 [ 15.266259] hfsplus_write_begin+0x51/0x100 [ 15.266262] cont_write_begin+0x272/0x720 [ 15.266270] hfsplus_write_begin+0x51/0x100 [ 15.266274] generic_perform_write+0x321/0x750 [ 15.266285] generic_file_write_iter+0xc3/0x310 [ 15.266289] __kernel_write_iter+0x2fd/0x800 [ 15.266296] dump_user_range+0x2ea/0x910 [ 15.266301] elf_core_dump+0x2a94/0x2ed0 [ 15.266320] vfs_coredump+0x1d85/0x45e0 [ 15.266349] get_signal+0x12e3/0x1990 [ 15.266357] arch_do_signal_or_restart+0x89/0x580 [ 15.266362] irqentry_exit_to_user_mode+0xab/0x110 [ 15.266364] asm_exc_page_fault+0x26/0x30 [ 15.266366] RIP: 0033:0x41bd35 [ 15.266367] Code: bc d1 f3 0f 7f 27 f3 0f 7f 6f 10 f3 0f 7f 77 20 f3 0f 7f 7f 30 49 83 c0 0f 49 29 d0 48 8d 7c 17 31 e9 9f 0b 00 00 66 0f ef c0 <f3> 0f 6f 0e f3 0f 6f 56 10 66 0f 74 c1 66 0f d7 d0 49 83 f8f [ 15.266369] RSP: 002b:00007ffc9e62d078 EFLAGS: 00010283 [ 15.266371] RAX: 00007ffc9e62d100 RBX: 0000000000000000 RCX: 0000000000000000 [ 15.266372] RDX: 00000000000000e0 RSI: 0000000000000000 RDI: 00007ffc9e62d100 [ 15.266373] RBP: 0000400000000040 R08: 00000000000000e0 R09: 0000000000000000 [ 15.266374] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 15.266375] R13: 0000000000000000 R14: 0000000000000000 R15: 0000400000000000 [ 15.266376] </TASK>

When calling hfsplus_bmap_alloc to allocate a free node, this function first retrieves the bitmap from header node and map node using node->page together with the offset and length from hfs_brec_lenoff

len = hfs_brec_lenoff(node, 2, &off16);
off = off16;

off += node->page_offset;
pagep = node->page + (off >> PAGE_SHIFT);
data = kmap_local_page(*pagep);

However, if the retrieved offset or length is invalid(i.e. exceeds node_size), the code may end up accessing pages outside the allocated range for this node.

This patch adds proper validation of both offset and length before use, preventing out-of-bounds page access. Move is_bnode_offset_valid and check_and_correct_requested_length to hfsplus_fs.h, as they may be required by other…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

net/sched: fix pedit partial COW leading to page cache corruption

tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd.

Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.(CVE-2026-46331)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)

• kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)

• kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)

• kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

• kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)

• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)

• kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)

• kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)

• kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330)

• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

• kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

• kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)

• kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

• kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

• kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

Bug Fix(es) and Enhancement(s):

• Rocky Linux10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-10.2.z] (JIRA:Rocky Linux-166047)

• Rocky Linux9.5 crash due to lpfc NULL ndlp->vport [rhel-10.2.z] (JIRA:Rocky Linux-171774)

• objtool static_call check blocks build of out-of-tree livepatch modules on Rocky Linux 10.2 GA kernels ? missing upstream revert f495054bd12e (JIRA:Rocky Linux-178495)

• ibmveth Adapter Freeze with Small MSS [rhel-10.2.z] (JIRA:Rocky Linux-179723)

• rbd: eliminate a race in lock_dwork draining on unmap [rhel-10.2.z] (JIRA:Rocky Linux-183127)

• Rocky Linux10.0 - s390/mm: Add missing secure storage access fixups [rhel-10.2.z] (JIRA:Rocky Linux-183319)

• [Rocky Linux10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:Rocky Linux-182299)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419)

• kernel: drm/amd/display: Do not skip unrelated mode changes in DSC validation (CVE-2026-31488)

• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)

• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)

• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

• kernel: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090)

• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)

• kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

Bug Fix(es) and Enhancement(s):

• Rocky Linux8 RT kernel panic in replenish_dl_entity() caused by stale DEADLINE PI state during rt_mutex de-boosting (JIRA:Rocky Linux-178520)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419)

• kernel: drm/amd/display: Do not skip unrelated mode changes in DSC validation (CVE-2026-31488)

• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)

• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)

• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

• kernel: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090)

• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)

• kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

Bug Fix(es) and Enhancement(s):

• Rocky Linux8 RT kernel panic in replenish_dl_entity() caused by stale DEADLINE PI state during rt_mutex de-boosting (JIRA:Rocky Linux-178520)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)

• kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)

• kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

• kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)

• kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)

• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)

• kernel: scsi: qla2xxx: Completely fix fcport double free (CVE-2026-43414)

• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

• kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)

• kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

• kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)

• kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)

• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)

• kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

• kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

• kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

• kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

Bug Fix(es) and Enhancement(s):

• Rocky Linux9.4 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-9.8.z] (JIRA:Rocky Linux-166048)

• [Rocky Linux 9.8] Hung tasks during both suspend and hibernate operations on systems with Intel E810 NICs [rhel-9.8.z] (JIRA:Rocky Linux-175699)

• DPLL: Add support for pin operational state [rhel-9.8.z] (JIRA:Rocky Linux-175820)

• DPLL: Add support for fractional frequency offset between pin and device [rhel-9.8.z] (JIRA:Rocky Linux-175823)

• ibmveth Adapter Freeze with Small MSS [rhel-9.8.z] (JIRA:Rocky Linux-178308)

• Rocky Linux9.4 - s390/mm: Add missing secure storage access fixups [rhel-9.8.z] (JIRA:Rocky Linux-183317)

• rbd: eliminate a race in lock_dwork draining on unmap [rhel-9.8.z] (JIRA:Rocky Linux-183130)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial COW leading to page cache corruption tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd. Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)
• kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
• kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)
• kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)
• kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)
• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)
• kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)
• kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)
• kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330)
• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)
• kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
• kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)
• kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)
• kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)
• kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

Bug Fix(es) and Enhancement(s):

• AlmaLinux10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [almalinux-10.2.z] (JIRA:AlmaLinux-166047)
• AlmaLinux9.5 crash due to lpfc NULL ndlp->vport [almalinux-10.2.z] (JIRA:AlmaLinux-171774)
• objtool static_call check blocks build of out-of-tree livepatch modules on AlmaLinux 10.2 GA kernels ? missing upstream revert f495054bd12e (JIRA:AlmaLinux-178495)
• ibmveth Adapter Freeze with Small MSS [almalinux-10.2.z] (JIRA:AlmaLinux-179723)
• rbd: eliminate a race in lock_dwork draining on unmap [almalinux-10.2.z] (JIRA:AlmaLinux-183127)
• AlmaLinux10.0 - s390/mm: Add missing secure storage access fixups [almalinux-10.2.z] (JIRA:AlmaLinux-183319)
• [AlmaLinux10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:AlmaLinux-182299)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419)
• kernel: drm/amd/display: Do not skip unrelated mode changes in DSC validation (CVE-2026-31488)
• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)
• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)
• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)
• kernel: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090)
• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)
• kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

Bug Fix(es) and Enhancement(s):

• AlmaLinux8 RT kernel panic in replenish_dl_entity() caused by stale DEADLINE PI state during rt_mutex de-boosting (JIRA:AlmaLinux-178520)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service (CVE-2026-31419)
• kernel: drm/amd/display: Do not skip unrelated mode changes in DSC validation (CVE-2026-31488)
• kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)
• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)
• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)
• kernel: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090)
• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)
• kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

Bug Fix(es) and Enhancement(s):

• AlmaLinux8 RT kernel panic in replenish_dl_entity() caused by stale DEADLINE PI state during rt_mutex de-boosting (JIRA:AlmaLinux-178520)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)
• kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
• kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)
• kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)
• kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)
• kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)
• kernel: scsi: qla2xxx: Completely fix fcport double free (CVE-2026-43414)
• kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)
• kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)
• kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
• kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)
• kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)
• kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)
• kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)
• kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)
• kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)
• kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

Bug Fix(es) and Enhancement(s):

• AlmaLinux9.4 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [almalinux-9.8.z] (JIRA:AlmaLinux-166048)
• [AlmaLinux 9.8] Hung tasks during both suspend and hibernate operations on systems with Intel E810 NICs [almalinux-9.8.z] (JIRA:AlmaLinux-175699)
• DPLL: Add support for pin operational state [almalinux-9.8.z] (JIRA:AlmaLinux-175820)
• DPLL: Add support for fractional frequency offset between pin and device [almalinux-9.8.z] (JIRA:AlmaLinux-175823)
• ibmveth Adapter Freeze with Small MSS [almalinux-9.8.z] (JIRA:AlmaLinux-178308)
• AlmaLinux9.4 - s390/mm: Add missing secure storage access fixups [almalinux-9.8.z] (JIRA:AlmaLinux-183317)
• rbd: eliminate a race in lock_dwork draining on unmap [almalinux-9.8.z] (JIRA:AlmaLinux-183130)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In the Linux kernel, the following vulnerability has been resolved:

net/sched: fix pedit partial COW leading to page cache corruption

tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd.

Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.

• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• ALSA: aloop: Fix racy access at PCM trigger {CVE-2026-23191}

• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• net: add xmit recursion limit to tunnel xmit functions {CVE-2026-23276}
• x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1 {CVE-2026-23005}
• wifi: brcmfmac: fix crash while sending Action Frames in standalone AP Mode {CVE-2025-40321}
• net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY {CVE-2025-37945}
• xfs: delete attr leaf freemap entries when empty {CVE-2026-43158}
• ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr {CVE-2025-68183}
• crypto: af_alg - Fix incorrect boolean values in af_alg_ctx
• scsi: hisi_sas: Grab sas_dev lock when traversing the members of sas_dev.list {CVE-2023-53627}
• bonding: annotate data-races around slave->last_rx {CVE-2026-23212}
• rxrpc: Fix data-race warning and potential load/store tearing {CVE-2026-23118}
• net: phy: register phy led_triggers during probe to avoid AB-BA deadlock {CVE-2026-23368}
• tracing: Do not register unsupported perf events {CVE-2025-71125}
• ACPICA: Avoid walking the Namespace if start_node is NULL {CVE-2025-71118}
• icmp: fix NULL pointer dereference in icmp_tag_validation() {CVE-2026-23398}
• nfc: rawsock: cancel tx_work before socket teardown {CVE-2026-23372}
• bridge: cfm: Fix race condition in peer_mep deletion {CVE-2026-23393}
• batman-adv: reject oversized global TT response buffers {CVE-2026-31659}
• NFC: digital: Bounds check NFC-A cascade depth in SDD response handler {CVE-2026-31622}
• bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue {CVE-2024-36938}
• virtiofs: use pages instead of pointer for kernel direct IO {CVE-2024-53219}
• acct: perform last write from workqueue {CVE-2025-21846}
• NFSD: fix race between nfsd registration and exports_proc {CVE-2025-38232}
• atm: clip: Fix memory leak of struct clip_vcc. {CVE-2025-38546}
• efi: Do not import certificates from UEFI Secure Boot for T2 Macs {CVE-2022-49357}

• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• xfrm_user: fix info leak in build_mapping() {CVE-2026-43089}
• xfs: fix freemap adjustments when adding xattrs to leaf blocks {CVE-2026-43158}

• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• unshare: fix unshare_fs() handling {CVE-2026-43472}
• net/sched: sch_hfsc: fix divide-by-zero in rtsc_min() {CVE-2026-31423}
• net/sched: cls_flow: fix NULL pointer dereference on shared blocks {CVE-2026-31422}
• net/sched: cls_fw: fix NULL pointer dereference on shared blocks {CVE-2026-31421}
• dm: fix queue start/stop imbalance under suspend/load/resume races {CVE-2025-40134}
• ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() {CVE-2024-26773}
• ext4: fix i_data_sem unlock order in ext4_ind_migrate() {CVE-2024-50006}
• xen: Fix the issue of resource not being properly released in xenbus_dev_probe() {CVE-2024-53198}
• HID: pidff: Fix null pointer dereference in pidff_find_fields {CVE-2025-37862}
• crypto: af_alg - Set merge to zero early in af_alg_sendmsg {CVE-2025-39931}
• x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper {CVE-2025-39681}
• can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak {CVE-2026-23061}
• bonding: restore IFF_MASTER/SLAVE flags on bond enslave ether type change {CVE-2023-53103}
• NFS: Fix a potential data corruption {CVE-2023-53711}
• NFS: Fix a use after free in nfs_direct_join_group() {CVE-2023-53711}
• hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field {CVE-2021-47386}
• scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload {CVE-2024-36919}
• x86/mm: Ensure input to pfn_to_kaddr() is treated as a 64-bit type {CVE-2023-52659}
• Input: uinput - reject requests with unreasonable number of slots {CVE-2024-46745}
• afs: Fix the maximum cell name length {CVE-2025-21646}
• drm/i915: Avoid potential vm use-after-free {CVE-2023-52931}
• interconnect: fix mem leak when freeing nodes {CVE-2023-53096}
• drm/vkms: Fix memory leak in vkms_init() {CVE-2022-50269}
• USB: dwc3: fix memory leak with using debugfs_lookup() {CVE-2023-53415}
• mm/uffd: fix pte marker when fork() without fork event {CVE-2022-49744}
• scsi: qla2xxx: Fix memory leak in qla2x00_probe_one() {CVE-2023-53696}
• ipmi_si: fix a memleak in try_smi_init() {CVE-2023-53611}
• KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() {CVE-2024-58083}
• scsi: lpfc: Release hbalock before calling lpfc_worker_wake_up() {CVE-2024-36924}
• firmware: cs_dsp: Validate payload length before processing block {CVE-2024-42237}
• hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field {CVE-2021-47385}
• ftrace: Avoid potential division by zero in function_stat_show() {CVE-2025-21898}
• IB/core: Implement a limit on UMAD receive List {CVE-2024-42145}
• vfio/pci: Disable auto-enable of exclusive INTx IRQ {CVE-2024-27437}
• netfilter: nf_tables: reject duplicate device on updates {CVE-2025-38678}
• PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type {CVE-2025-23161}
• net: nexthop: Initialize all fields in dumped nexthops {CVE-2024-42283}
• tracing: Make sure trace_printk() can output as soon as it can be used {CVE-2023-53007}
• net: tls: explicitly disallow disconnect {CVE-2025-37756}
• KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel {CVE-2025-21779}
• ext4: turn quotas off if mount failed after enabling quotas {CVE-2023-54153}
• NFC: digital: Bounds check NFC-A cascade depth in SDD response handler {CVE-2026-31622}
• block: fix overflow in blk_ioctl_discard() {CVE-2024-36917}
• usb: xhci: Check endpoint is valid before dereferencing it {CVE-2023-52901}
• iio: core: fix memleak in iio_device_register_sysfs {CVE-2023-52643}
• platform/x86/amd/pmc: Detect when STB is not available {CVE-2024-53072}
• mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath() {CVE-2023-52939}
• dm thin: make get_first_thin use rcu-safe list first function {CVE-2025-21664}
• bus: mhi: host: pci_generic: Use pci_try_reset_function() to avoid deadlock {CVE-2025-21951}
• bonding: provide a net pointer to…

• Rebased onto Oracle UEK base 5.4.17-2136.357.2.el7uek
• sctp: don't free the ASCONF's own transport in DEL-IP processing {CVE-2026-64564}
• ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison {CVE-2026-53309}
• ocfs2/dlm: validate qr_numregions in dlm_match_regions() {CVE-2026-53043}
• ixgbevf: fix use-after-free in VEPA multicast source pruning {CVE-2026-64113}
• ipv4: raw: reject IP_HDRINCL packets with ihl < 5 {CVE-2026-64114}
• NFSv4: include MAY_WRITE in open permission mask for O_TRUNC {CVE-2026-64298}
• fuse: re-lock request before returning from fuse_ref_folio() {CVE-2026-64266}
• scsi: isci: Fix use-after-free in device removal path {CVE-2026-64103}
• crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec {CVE-2026-23060}
• futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock {CVE-2026-53166}
• net: af_key: zero aligned sockaddr tail in PF_KEY exports {CVE-2026-43088}
• scsi: aic94xx: fix use-after-free in device removal path {CVE-2025-71075}
• i2c: piix4: Fix adapter not be removed in piix4_remove() {CVE-2022-49900}
• Bluetooth: MGMT: validate LTK enc_size on load {CVE-2026-43020}
• ext4: convert inline data to extents when truncate exceeds inline size {CVE-2026-31452}
• can: raw: fix ro->uniq use-after-free in raw_rcv() {CVE-2026-31532}
• ALSA: 6fire: fix use-after-free on disconnect {CVE-2026-31581}
• ocfs2: fix use-after-free in ocfs2_fault() when VM_FAULT_RETRY {CVE-2026-31597}
• netfilter: nf_conntrack_helper: pass helper to expect cleanup {CVE-2026-43027}
• drm/amdgpu: Fix use-after-free race in VM acquire {CVE-2026-43370}
• xfrm_user: fix info leak in build_mapping() {CVE-2026-43089}
• xfs: fix freemap adjustments when adding xattrs to leaf blocks {CVE-2026-43158}
• libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• e1000: fix OOB in e1000_tbi_should_accept() {CVE-2025-71093}
• ALSA: usb-audio: Use correct version for UAC3 header validation {CVE-2026-23318}
• nfnetlink_osf: validate individual option lengths in fingerprints {CVE-2026-23397}
• Squashfs: check metadata block offset is within range {CVE-2026-23388}
• net: bridge: fix nd_tbl NULL dereference when IPv6 is disabled {CVE-2026-23381}
• wifi: mac80211: fix NULL deref in mesh_matches_local() {CVE-2026-23396}
• icmp: fix NULL pointer dereference in icmp_tag_validation() {CVE-2026-23398}
• HID: Add HID_CLAIMED_INPUT guards in raw_event callbacks missing them {CVE-2026-23382}
• net: usb: kalmia: validate USB endpoints {CVE-2026-23365}
• wifi: radiotap: reject radiotap with unknown bits {CVE-2026-23367}
• drbd: fix "LOGIC BUG" in drbd_al_begin_io_nonblock() {CVE-2026-23356}
• batman-adv: reject oversized global TT response buffers {CVE-2026-31659}
• drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() {CVE-2026-43206}
• net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak {CVE-2026-43040}
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• nvdimm/bus: Fix potential use after free in asynchronous initialization {CVE-2026-31399}
• usb: class: cdc-wdm: fix reordering issue in read code path {CVE-2026-43427}
• media: dvb-net: fix OOB access in ULE extension header tables {CVE-2026-31405}
• sysctl: Fix data races in proc_douintvec(). {CVE-2022-49641}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• atm: lec: fix use-after-free in sock_def_readable() {CVE-2026-43050}
• fs: writeback: fix use-after-free in __mark_inode_dirty() {CVE-2025-39866}
• usb: core: config: Prevent OOB read in SS endpoint companion parsing {CVE-2025-39760}
• crypto: lzo - Fix compression buffer overrun {CVE-2025-38068}
• KVM: x86: Reset IRTE to host control if new route isn't postable {CVE-2025-37885}
• vhost-scsi: Fix handling of multiple calls to vhost_scsi_set_endpoint {CVE-2025-22083}
• mm:…

• net: skbuff: propagate shared-frag marker in skb_zerocopy()
• net: bridge: stop fast-leave after deleting a port group {CVE-2026-74480}
• net: ipv6: clear suppressed fib6 rule result {CVE-2026-74581}
• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• ipvs: do not propagate one-packet flag to synced conns {CVE-2026-80714}
• net: skbuff: propagate shared-frag marker through frag-transfer helpers {CVE-2026-43503}
• sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START {CVE-2026-98130}
• tipc: require net admin for TIPCv2 netlink mutators {CVE-2026-74283}
• sctp: fix OOB write to userspace in sctp_getsockopt_peer_auth_chunks {CVE-2026-53004}
• usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() {CVE-2026-63962}
• ice: fix double-free of tx_buf skb {CVE-2026-53009}
• configfs: unhash the dentry before dropping the item in rmdir {CVE-2026-97949}
• configfs_lookup(): don't leave ->s_dentry dangling on failure {CVE-2026-74359}
• xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() {CVE-2026-53239}
• bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops {CVE-2026-53078}
• crypto: authencesn - reject short ahash digests during instance creation {CVE-2026-46033}
• smb: client: reject userspace cifs.idmap descriptions {CVE-2026-97564}
• HID: lg-g15: cancel pending work on remove to fix a use-after-free {CVE-2026-64362}
• HID: hidpp: fix potential UAF in hidpp_connect_event() {CVE-2026-93826}
• hid: hid-logitech-hidpp: avoid unnecessary assignments in hidpp_connect_event {CVE-2026-93826}
• KEYS: encrypted: fix integer overflow of datablob_len {CVE-2026-98222}
• scsi: qla2xxx: Skip vport under deletion in report ID acquisition {CVE-2026-97531}
• dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() {CVE-2026-98343}
• tipc: prevent snt_unacked underflow on CONN_ACK {CVE-2026-74282}
• libceph: Fix potential null-ptr-deref in decode_choose_args() {CVE-2026-52957}
• libceph: Fix potential out-of-bounds access in __ceph_x_decrypt() {CVE-2026-52956}
• sctp: prevent peer transport count overflow {CVE-2026-74469}
• sctp: fix addr_wq_timer race in sctp_free_addr_wq() {CVE-2026-72383}
• sctp: fix err_chunk memory leaks in INIT handling {CVE-2026-72413}
• nvme: add missing SRCU grace period in error path {CVE-2026-89972}
• nvme-tcp: fix host memory disclosure on R2T for a read command {CVE-2026-89481}
• drm/vmwgfx: validate DRAW_PRIMITIVES header size before division {CVE-2026-74444}
• drm/amd/display: Fix dangling pointer in CRTC reset function {CVE-2026-93175}
• nouveau/gem: reserve the bo in the info ioctl around the vma lookup {CVE-2026-89553}
• usb: fix UAF when probe runs concurrent to dyn ID removal {CVE-2026-93117}
• usb: xusbatm: don't rely on id table pointer arithmetic {CVE-2026-97539}
• USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() {CVE-2026-53195}
• wifi: brcmsmac: fix UAF in brcms_free_timer() {CVE-2026-98196}
• slip: remove slip_hangup() to fix use-after-free in slip_receive_buf() {CVE-2026-90057}
• vxlan: re-fetch eth header after route_shortcircuit() {CVE-2026-80681}
• net: thunderbolt: Fix frags[] overflow by bounding frame_count {CVE-2026-72157}
• RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() {CVE-2026-46181}
• wifi: ath9k: fix OOB access from firmware tx status queue ID {CVE-2026-74408}
• ppp: require CAP_NET_ADMIN in target netns for unattached ioctls {CVE-2026-53075}
• wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup() {CVE-2026-46069}
• Bluetooth: btusb: fix use-after-free on registration failure {CVE-2026-64471}
• scsi: target: iscsi: Reserve a terminator byte for the login payload {CVE-2026-90011}
• scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() {CVE-2026-46149}
• pNFS: Fix use-after-free in pnfs_update_layout() {CVE-2026-63800}
• NFSv4/flexfiles: reject zero filehandle version count {CVE-2026-53392}
• fs/mbcache: cancel shrink work before destroying the…

• net: skbuff: propagate shared-frag marker in skb_zerocopy()
• net: bridge: stop fast-leave after deleting a port group {CVE-2026-74480}
• net: ipv6: clear suppressed fib6 rule result {CVE-2026-74581}
• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• ipvs: do not propagate one-packet flag to synced conns {CVE-2026-80714}
• net: skbuff: propagate shared-frag marker through frag-transfer helpers {CVE-2026-43503}
• smb: client: harden POSIX SID length parsing {CVE-2026-64380}
• RDMA: Fix use-after-free in rxe_queue_cleanup {CVE-2021-47616}
• nfsd: validate symlink target length in NFSv4 CREATE {CVE-2026-89699}
• sctp: fix addr_wq_timer race in sctp_free_addr_wq() {CVE-2026-72383}
• isofs: fix out-of-bounds page array access on empty zisofs block {CVE-2026-89778}
• configfs: unhash the dentry before dropping the item in rmdir {CVE-2026-97949}
• netfilter: ipset: fix race between dump and ip_set_list resize {CVE-2026-64189}
• netfilter: conntrack_irc: fix possible out-of-bounds read {CVE-2026-53268}
• ipvs: clear the svc scheduler ptr early on edit {CVE-2026-53270}
• netfilter: xt_policy: fix strict mode inbound policy matching {CVE-2026-52920}
• media: cx23885: cancel NetUP CI work before teardown {CVE-2026-89893}
• dmaengine: Fix possible use after free {CVE-2026-72476}
• net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring {CVE-2026-64047}
• tipc: prevent snt_unacked underflow on CONN_ACK {CVE-2026-74282}
• xfrm: hold net_device reference under RCU in bundle creation {CVE-2026-98364}
• xfrm: Check for underflow in xfrm_state_mtu {CVE-2026-64009}
• net: mpls: clear inner_protocol when the last label is popped {CVE-2026-97612}
• net: guard timestamp cmsgs to real error queue skbs {CVE-2026-53223}
• thunderbolt: Bound root directory content to block size {CVE-2026-53149}
• SUNRPC: always drain cache_cleaner before destroying a cache_detail {CVE-2026-89548}
• SUNRPC: harden gss_krb5_unwrap_v2 against short tokens {CVE-2026-89542}
• SUNRPC: svcauth_gss: enforce krb5 token minimum length {CVE-2026-89550}
• SUNRPC: Reject short RFC 4121 MIC tokens in gss_krb5_verify_mic_v2 {CVE-2026-89537}
• SUNRPC: make sure cache entry active before cache_show {CVE-2024-53174}
• ipv6: fix fib6 walker UAF on seq stop {CVE-2026-97940}
• ipv6: sr: restore network header before routing and forwarding {CVE-2026-98096}
• ipv6: sit: reload inner IPv6 header after GSO offloads {CVE-2026-53228}
• ipv6: mcast: Fix use-after-free when processing MLD queries {CVE-2026-53275}
• ipv6: exthdrs: refresh nh after handling HAO option {CVE-2026-63922}
• ip6_gre: Use cached t->net in ip6erspan_changelink(). {CVE-2026-46120}
• ipv6: fix possible UAF in icmpv6_rcv() {CVE-2026-53006}
• ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() {CVE-2026-64002}
• Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count {CVE-2026-64276}
• ACPICA: Add validation for node in acpi_ns_build_normalized_path() {CVE-2026-97448}
• scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() {CVE-2026-46149}
• usb: xusbatm: don't rely on id table pointer arithmetic {CVE-2026-97539}
• USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() {CVE-2026-53195}
• mrp: introduce active flags to prevent UAF when applicant uninit {CVE-2022-50697}
• HID: sensor-hub: Fix out-of-bounds write in sensor_hub_get_feature {CVE-2026-89729}
• net/sched: defer qdisc freeing after failed creation {CVE-2026-98017}
• Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp {CVE-2026-53071}
• Bluetooth: L2CAP: Fix invalid access if ECRED Reconfigure fails {CVE-2026-53071}
• scsi: qla2xxx: Clamp MSI-X derived queue counts to avoid truncation {CVE-2026-89856}
• drm: fix race between partial drm_dev_register() failure and ioctl {CVE-2026-89823}
• drm/amd/pm: bound pp_dpm_set_pp_table() memcpy {CVE-2026-97427}
• dm log: fix out-of-bounds write due to region_count overflow {CVE-2026-53059} -…

• can: esd_usb: kill anchored URBs before freeing netdevs {CVE-2026-64585}
• ext4: fix kernel BUG in ext4_write_inline_data_end {CVE-2026-74308}
• netfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop {CVE-2026-72348}
• xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() {CVE-2026-64580}
• platform/x86: dell-laptop: fix missing cleanups in init error path {CVE-2026-72144}
• ALSA: seq: Clear variable event pointer on read {CVE-2026-74339}
• netfilter: xt_cluster: reject template conntracks in hash match {CVE-2026-72256}
• net/sched: cls_flow: Dont expose folded kernel pointers {CVE-2026-74290}
• mfd: sm501: Fix reference leak on failed device registration {CVE-2026-72240}
• net: atm: reject out-of-range traffic classes in QoS validation {CVE-2026-72297}
• ALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser {CVE-2026-64487}
• scsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker {CVE-2026-63890}
• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• RDMA/cxgb4: free STAG index when TPT entry write fails {CVE-2026-90415}
• isofs: release zisofs block pointer buffer head {CVE-2026-90434}
• HID: roccat: bound device-supplied profile index {CVE-2026-93188}
• fat: release buffer head after rebuilding parent {CVE-2026-90318}
• wifi: mac80211: ibss: wait for in-flight TX on disconnect {CVE-2026-93804}
• wifi: rtlwifi: pci: fix error path in rtl_pci_probe() {CVE-2026-90403}
• serial: core: clear freed pointers on uart_register_driver() failure {CVE-2026-90336}
• locking/lockdep: Fix NULL pointer dereference in __lock_set_class() {CVE-2026-93261}
• smb: client: reject short READ responses in CIFSSMBRead() {CVE-2026-97565}
• UDF symlink pathComponent header OOB read {CVE-2026-93055}
• ACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root {CVE-2026-92521}
• RDMA/ipoib: Drain RCU callbacks during module teardown {CVE-2026-93108}
• cifs: call pagecache_isize_extended() in cifs_setsize() when extending {CVE-2026-89642}
• nfsd: release path refs on follow_down() error {CVE-2026-89707}
• HID: roccat: free buffered reports when destroying device {CVE-2026-89627}
• NTB: ntb_transport: Reject oversized TX buffers {CVE-2026-80987}
• wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() {CVE-2026-80949}
• svcrdma: Reject connection when transport allocation fails {CVE-2026-89531}
• xfrm: fix xfrm_state_construct() auth-trunc leak {CVE-2026-80843}
• sctp: reject stale cookies with mismatched verification tags {CVE-2026-80890}
• SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails {CVE-2022-50821}
• ipv6/sit: use DEV_STATS_INC() to avoid data-races {CVE-2022-50764}
• mtd: Fix device name leak when register device failed in add_mtd_device() {CVE-2022-50566}
• virtio_console: eliminate anonymous module_init & module_exit {CVE-2022-49100}
• mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0) {CVE-2022-49077}
• lockd: fix NULL dereference on lockowner allocation failure {CVE-2026-89484}
• mfd: sm501: Fix potential memory leaks during remove {CVE-2026-80974}
• wifi: iwlwifi: dvm: fix memory leak in iwl_op_mode_dvm_start() {CVE-2026-80948}
• acct: fix potential integer overflow in encode_comp_t() {CVE-2022-50749}
• media: dvb-frontends: fix leak of memory fw {CVE-2022-50664}
• usb: core: Add lock to usb_wakeup_notification() {CVE-2026-80830}
• rndis_host: add overflow check in rndis_rx_fixup() {CVE-2026-80814}
• udf: reject VAT indexes equal to the entry count {CVE-2026-89525}
• lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen() {CVE-2026-89726}
• ceph: bound xattr value length in __build_xattrs() {CVE-2026-89649}
• bnx2x: fix double free in bnx2x_init_firmware() error path {CVE-2026-89582}
• SUNRPC: xdr_buf_trim: clamp buf->len to avoid underflow {CVE-2026-89551}
• sctp: stop processing a packet once its association is deleted {CVE-2026-89479}
• ALSA: aloop: Check card index…

• can: esd_usb: kill anchored URBs before freeing netdevs {CVE-2026-64585}
• ext4: fix kernel BUG in ext4_write_inline_data_end {CVE-2026-74308}
• netfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop {CVE-2026-72348}
• xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() {CVE-2026-64580}
• platform/x86: dell-laptop: fix missing cleanups in init error path {CVE-2026-72144}
• ALSA: seq: Clear variable event pointer on read {CVE-2026-74339}
• netfilter: xt_cluster: reject template conntracks in hash match {CVE-2026-72256}
• net/sched: cls_flow: Dont expose folded kernel pointers {CVE-2026-74290}
• mfd: sm501: Fix reference leak on failed device registration {CVE-2026-72240}
• net: atm: reject out-of-range traffic classes in QoS validation {CVE-2026-72297}
• ALSA: caiaq: fix out-of-bounds read in the Traktor Kontrol S4 input parser {CVE-2026-64487}
• scsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker {CVE-2026-63890}
• net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• RDMA/cxgb4: free STAG index when TPT entry write fails {CVE-2026-90415}
• isofs: release zisofs block pointer buffer head {CVE-2026-90434}
• HID: roccat: bound device-supplied profile index {CVE-2026-93188}
• fat: release buffer head after rebuilding parent {CVE-2026-90318}
• wifi: mac80211: ibss: wait for in-flight TX on disconnect {CVE-2026-93804}
• wifi: rtlwifi: pci: fix error path in rtl_pci_probe() {CVE-2026-90403}
• serial: core: clear freed pointers on uart_register_driver() failure {CVE-2026-90336}
• locking/lockdep: Fix NULL pointer dereference in __lock_set_class() {CVE-2026-93261}
• smb: client: reject short READ responses in CIFSSMBRead() {CVE-2026-97565}
• UDF symlink pathComponent header OOB read {CVE-2026-93055}
• ACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root {CVE-2026-92521}
• RDMA/ipoib: Drain RCU callbacks during module teardown {CVE-2026-93108}
• cifs: call pagecache_isize_extended() in cifs_setsize() when extending {CVE-2026-89642}
• nfsd: release path refs on follow_down() error {CVE-2026-89707}
• HID: roccat: free buffered reports when destroying device {CVE-2026-89627}
• NTB: ntb_transport: Reject oversized TX buffers {CVE-2026-80987}
• wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() {CVE-2026-80949}
• svcrdma: Reject connection when transport allocation fails {CVE-2026-89531}
• xfrm: fix xfrm_state_construct() auth-trunc leak {CVE-2026-80843}
• sctp: reject stale cookies with mismatched verification tags {CVE-2026-80890}
• SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails {CVE-2022-50821}
• ipv6/sit: use DEV_STATS_INC() to avoid data-races {CVE-2022-50764}
• mtd: Fix device name leak when register device failed in add_mtd_device() {CVE-2022-50566}
• virtio_console: eliminate anonymous module_init & module_exit {CVE-2022-49100}
• mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0) {CVE-2022-49077}
• lockd: fix NULL dereference on lockowner allocation failure {CVE-2026-89484}
• mfd: sm501: Fix potential memory leaks during remove {CVE-2026-80974}
• wifi: iwlwifi: dvm: fix memory leak in iwl_op_mode_dvm_start() {CVE-2026-80948}
• acct: fix potential integer overflow in encode_comp_t() {CVE-2022-50749}
• media: dvb-frontends: fix leak of memory fw {CVE-2022-50664}
• usb: core: Add lock to usb_wakeup_notification() {CVE-2026-80830}
• rndis_host: add overflow check in rndis_rx_fixup() {CVE-2026-80814}
• udf: reject VAT indexes equal to the entry count {CVE-2026-89525}
• lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen() {CVE-2026-89726}
• ceph: bound xattr value length in __build_xattrs() {CVE-2026-89649}
• bnx2x: fix double free in bnx2x_init_firmware() error path {CVE-2026-89582}
• SUNRPC: xdr_buf_trim: clamp buf->len to avoid underflow {CVE-2026-89551}
• sctp: stop processing a packet once its association is deleted {CVE-2026-89479}
• ALSA: aloop: Check card index…

• CVE-2026-74581
  • net: ipv6: clear suppressed fib6 rule result {CVE-2026-74581}
• CVE-2026-46331
  • net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• CVE-2026-64007
  • netfilter: synproxy: refresh tcphdr after skb_ensure_writable {CVE-2026-64007}
• CVE-2026-31532
  • can: raw: fix ro->uniq use-after-free in raw_rcv() {CVE-2026-31532}
• CVE-2026-98375
  • xen/netfront: drop RX packets with a short Ethernet header {CVE-2026-98375}
• CVE-2026-98266
  • ALSA: core: Fix potential UAF after asynchronous card release {CVE-2026-98266}
• CVE-2026-98194
  • wifi: libertas_tf: fix UAF in lbtf_free_adapter() {CVE-2026-98194}
• CVE-2026-98196
  • wifi: brcmsmac: fix UAF in brcms_free_timer() {CVE-2026-98196}
• CVE-2026-98349
  • wifi: libipw: reject too-short beacon and probe responses {CVE-2026-98349}
• CVE-2026-98348
  • wifi: libipw: reject too-short association responses {CVE-2026-98348}
• CVE-2026-98217
  • IB/mlx4: Fix use-after-free on pkey sysfs registration failure {CVE-2026-98217}
• CVE-2026-64002
  • ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() {CVE-2026-64002}
• CVE-2026-98193
  • wifi: libipw: reject TKIP frames without a full MIC {CVE-2026-98193}
• CVE-2026-53059
  • dm log: fix out-of-bounds write due to region_count overflow {CVE-2026-53059}
• CVE-2022-50103
  • sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed {CVE-2022-50103}
• CVE-2025-38563
  • perf/core: Prevent VMA split of buffer mappings {CVE-2025-38563}
• CVE-2025-39839
  • batman-adv: fix OOB read/write in network-coding decode {CVE-2025-39839}
• Bump ABI 4.4.0-290

• Bump kernel ABI to 31: ship the ELS kernel as 4.19.0-31-*, distinct from the prior 4.19.0-30.
• CVE-2024-53150
  • ALSA: usb-audio: Fix out of bounds reads when finding clock sources {CVE-2024-53150}
• CVE-2026-43284
  • xfrm: esp: avoid in-place decrypt on shared skb frags {CVE-2026-43284}
• CVE-2026-43503
  • net: skbuff: propagate shared-frag marker through frag-transfer helpers {CVE-2026-43503}
• CVE-2026-46113
  • KVM: x86: Fix shadow paging use-after-free due to unexpected GFN/role {CVE-2026-46113}
• CVE-2026-46300
  • net: skbuff: preserve shared-frag marker during coalescing {CVE-2026-46300}
• CVE-2026-46331
  • net/sched: fix pedit partial COW leading to page cache corruption {CVE-2026-46331}
• CVE-2026-74480
  • net: bridge: stop fast-leave after deleting a port group {CVE-2026-74480}
• CVE-2026-74581
  • net: ipv6: clear suppressed fib6 rule result {CVE-2026-74581}
• CVE-2026-80714
  • ipvs: do not propagate one-packet flag to synced conns {CVE-2026-80714}
• Miscellaneous upstream changes
  • net: skbuff: propagate shared-frag marker in skb_zerocopy()

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2025-10263: arm64: cputype: Add C1-Premium definitions (bsc#1266290).
• CVE-2025-39894: netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm (bsc#1262430).
• CVE-2025-40341: futex: Don't leak robust_list pointer on exec race (bsc#1255029).
• CVE-2026-23248: perf: Make perf_pmu_unregister() useable (bsc#1259800).
• CVE-2026-23394: Revert: "af_unix: Remove lock dance in unix_peek_fds()." (bsc#1260565).
• CVE-2026-23451: bonding: prevent potential infinite loop in bond_header_parse() (bsc#1261604).
• CVE-2026-31414: netfilter: nf_conntrack_expect: use expect->helper (bsc#1262085).
• CVE-2026-31429: net: skb: fix cross-cache free of KFENCE-allocated skb head (bsc#1262392).
• CVE-2026-31438: netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators (bsc#1267824).
• CVE-2026-31450: ext4: publish jinode after initialization (bsc#1262618).
• CVE-2026-31452: ext4: convert inline data to extents when truncate exceeds inline size (bsc#1262620).
• CVE-2026-31466: mm/huge_memory: fix folio isn't locked in softleaf_to_folio() (bsc#1267825).
• CVE-2026-31469: virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false (bsc#1267816).
• CVE-2026-31479: drm/xe: always keep track of remap prev/next (bsc#1262765).
• CVE-2026-31492: RDMA/irdma: Initialize free_qp completion before using it (bsc#1262748).
• CVE-2026-31495: netfilter: ctnetlink: use netlink policy range checks (bsc#1262798).
• CVE-2026-31499: Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del() (bsc#1262674).
• CVE-2026-31502: team: fix header_ops type confusion with non-Ethernet ports (bsc#1263072).
• CVE-2026-31555: futex: Clear stale exiting pointer in futex_lock_pi() retry path (bsc#1263178).
• CVE-2026-31560: spi: spi-dw-dma: fix print error log when wait finish transaction (bsc#1263057).
• CVE-2026-31596: ocfs2: handle invalid dinode in ocfs2_group_extend (bsc#1263319).
• CVE-2026-31646: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() (bsc#1263796).
• CVE-2026-31647: idpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling (bsc#1263581).
• CVE-2026-31663: xfrm: hold device only for the asynchronous decryption (bsc#1263133).
• CVE-2026-31664: xfrm: clear trailing padding in build_polexpire() (bsc#1263578).
• CVE-2026-31665: netfilter: nft_ct: fix use-after-free in timeout object destroy (bsc#1263137).
• CVE-2026-31670: net: rfkill: prevent unlimited numbers of rfkill events from being created (bsc#1263573).
• CVE-2026-31673: af_unix: read UNIX_DIAG_VFS data under unix_state_lock (bsc#1263143).
• CVE-2026-31674: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() (bsc#1263568).
• CVE-2026-31680: net: ipv6: flowlabel: defer exclusive option free until RCU teardown (bsc#1263563).
• CVE-2026-31693: cifs: some missing initializations on replay (bsc#1267744).
• CVE-2026-31743: nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy (bsc#1264067).
• CVE-2026-31752: bridge: br_nd_send: validate ND option lengths (bsc#1264045).
• CVE-2026-31771: Bluetooth: hci_event: move wake reason storage into validated event handlers (bsc#1264145).
• CVE-2026-43010: bpf: Reject sleepable kprobe_multi programs at attach time (bsc#1264015).
• CVE-2026-43014,CVE-2026-43015: net: macb: fix clk handling on PCI glue driver removal (bsc#1264010 bsc#1264012).
• CVE-2026-43016: bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready() (bsc#1264007).
• CVE-2026-43022: Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists (bsc#1264001).
• CVE-2026-43024: netfilter: nf_tables: reject immediate NF_QUEUE verdict (bsc#1263930).
• CVE-2026-43028: netfilter: x_tables: ensure names are nul-terminated (bsc#1263934).
• CVE-2026-43034: bnxt_en: set backing store type from query type (bsc#1263998).
• CVE-2026-43035: net:…